Lock nut



July 22 192 1,502.492

F.c.wARNE LcK NUT Patented July 22, 1924.

stares FREDERICK C. WARNE, 0 F MANSFIELD5DHIO.

LOCK NUT.

Application filed Apri120, 1922. Serial No. 555,776.

To all whom it may concern:

Be it known that I, FREDERICK C. WARNE, a citizen of the United States,residing at Mansfield, in the county of Richland and State of Ohio, haveinvented certain new and useful Improvements in Lock Nuts, of which thefollowing is a specification.

My invention relates to improvements in lock-nuts, and more particularlyto that class or type in which the nut is provided with a lockingelement or member adapted to be manually forced into seated or lockedposition in a lock receiving recess or opening in the bolt whereby tolock these parts as agamst relative movement or rotation.

My invention further relates to lock-nuts of the type or classexemplified in my reissued Patent No. 14,928 of July 27, 1920, and tocertain improvements thereover 'as will hereinafter more fully appear.

The primary object of my invention is to provide a generally improvedlock-nut of the class indicated which will be exceedingly simple inconstruction, cheap of manu facture, and efiicient in use.

A further and very important object is the provision of a bolt and nutin w hich the cooperating locking elements orfeatures thereof are soarranged and disposed relative to each other as to not only permit thenormal locking of the nut in position with respect to the bolt but willpermit the nut to be moved through the application offorce by a wrenchwhereby the locking element will be positively unlocked or unseated toassume a position above and to bemoved over the adjacent threads of thebolt .for removal of the nut or for the assumption of a new lockingposition as desired.

There are other features of the invention residing in elementalcombinations and particular construction of parts, all as will behereinafter more fully referred to.

With the above mentioned and other ends in view, the invention consistsin the novel construction, arrangement and combinations of parts,hereinafter described, illustrated in some of its embodiments in theaccompanying drawings and particularly pointed out in the appendedclaims.

Referring to the drawings, forminga part of this specification, Figure 1is a side elevation, partly in longitudinal section, ofabolt andloclrnut, constructed in accordance with this invention and applied totwo connected parts, the lock-nut losing shown in locked position.

2, an end elevation of the Same. Flg. .3, a side elevation of thethreaded end of a bolt,'a portion beingbrokenaway to more clearly showthe details of the lock receiving recess.

Fig. .4, an endview of the same.

Fig. 5, a side elevation, partly in section, of a bolt and nut showinganother modification or embodiment of the invention.

Fig. 6, an end view of the same, with oppositely disposed. lockingelements or members in locked engagement with opposite portions of amodified form of lock receiving recess.

Fig. 7, an end view illustrating a further modification ofa lockreceivingrecess in thethreaded end of the shown in seated or lockedposition.

bolt, the locking element of the nut being:

Similar numerals of reference designa e like parts throughout all theg-figures ofthe drawings.

The bolt 1, and bolt 1 may be of any suitable and convenientconstruction and so likewise as to the general form or type of the body2, of the lock nut.

As a means of providing the nut 2 with a plurality of regularly spacedand formed locking elements or fingers 2, adapted to be seated'in and tointerlock with a suitable lock receiving recess or opening in theadjacent threaded portion 1", of the bolt as hereinafter referred to,and alsoproviding the interior of such locking elements or fingers 2*with threads corresponding to the threads in the bore of the body of thenut, the latter is preferably provided with an internally threadedcylindrical section 2,

the latter being preferably of less external diameter than the minimumtransverse external diameter of the body 2 of the nut, so that thelocking elements or fingers will not project beyond the outer peripheryof the of a bolt and nutreceiving recesses, as shown in Figs. 5 and 6 ofthe drawings, and in which instance, the outer surfaces of thecylindrical section 2 are initially bevelled toward the outer edge forthe purpose of forming corresponding bevelled surfaces on the fingers,as illustrated in Fig. 5 of the drawings.

As a means of dividing the cylindrical section 2 into a series oflocking elements or fingers 2 and particularly as a means of formingsuch locking elements with wedge shaped sides to cooperate withsimilarly inclined or wedge shaped lock receiving recesses in the boltin the locking and unlocking operation, the cylindrical section 2 isprovided with suitably spaced radially extending slots or recesses andthe lock receiving recess 1, is provided with correspondingly formed andinclined sides 1 which, it will be seen upon reference to Figs. 2 and 4:of the drawings, are at a considerable angle or inclination. Therelative arrangement and disposition of the sides of the lockingelements or fingers 2 and of the sides 1 of the recesses 1 are such thatwhen a locking element 2 is in seated or locked position,-as shown forexample in Figs. 1 and 2 of the drawings, the coaction of such inclinedportions will, upon the application of force by a wrench to the nut body2, cause the locking elements 2 to be forced out of such recess into anunlocked position and to ride over the adjacentthreads of the bolt forthe removal ofthe nut'or for the assumption of a new locking position asdesired.

In the form shown in Figs. 1 to 4 inclusive of the drawings the lockreceiving recess 1 is provided with a rearwardly inclined bottom portion1, the outer portion intersecting the end 1, of the threaded end of thebolt as well as the threaded portion of the bolt which normally restsbeneath the locking elements 2 In the form shown in Figs. 5 and 6 of thedrawings, the lock receiving recess is in the specific form of a slot 1which intersects o posite threaded portions of the bolt dividlng suchthreaded portion of the bolt into bifurcations or branches 1 said slot,in the present instance, extending to a depth correspondingsubstantially/to the depth or length of the tapered locking elements 2*.In such instance one of the looking elements or fingers 2 may. be bentdown into the recess or slot 1- a'substantial distance and it will alsobe obvious that the unobstructed end of the slot 1 offers free accessfor the use of a. suitable tool for ejecting the tongue or finger 2 inthe unlocking operation, it being obvious that when such locking elementis bent down, as shown in the upper portion of Fig. 6 of the drawings,that the automatic return of such element by the application of forcethe drawings.

As a further modified form of lock receiving recess or opening in thebolt, a relatively wide and relatively fiat recess 1 as shown in Fig. 7,may be provided, and in which instance a right angled shoulder 1 isprovided to prevent retrograde movement of the nut and aninclined'shoulder 1, at the opposite side is provided. In thisinstancealso the locking element 2 may be unseated by the return movement of thenut through the application of a wrench, the inclined portion of thefinger 2* being adapted to ride over the shoulder 1 or if moved forwarda sufficient distance the inclined shoulder 1 will engage with thesimilarly inclined side of the locking element 2 in an obvious and awell understood manner.

From the foregoing description taken in connection with the accompanyingdrawings, the operation and advantages of my invention will be readilyunderstood.

Having thus described some of the embodiments of my invention, withouthaving attempted to set forth all the forms in which it may be made, orall the modes of its use, what I claim and desire to secure by LettersPatent is,-

1. A lock-nut having an interiorally threaded cylindrical sectiondivided into a plurality of regularly spaced longitudinally taperedwedge shaped locking fingers.

2. A lock-nut having a cylindrical extension threaded on its interiorcorresponding with the threads in the body of the nut and divided into aplurality of longitudinally tapered bendable fingers having wedge shapedsides.

8. A lock-nut having a cylindrical axial extension threaded on itsinterior corresponding with and forming a continuation of the threads inthe bore of the nut and divided into a plurality of longitudinallytapered parallel extending bendable fingers having radially divergingsides. I

4. In a nut and bolt lock, a threaded bolt having its outer terminalthreads intersected by a longitudinally extending wedge shaped recesshaving a rearwardly inclined. bottom portion, and a lock-nut havinglongitudinally extending locking fingers provided with wedge shapedsides adapted'to be wedged and seated in said wedge shaped recess theinclination of the sides of said fingers and of the walls ofsaid recessbeing such as to normally look the nut in position on the threaded boltand to permit the nut to be moved through the application of force by awrench whereby the engaged locking finger will be unseated by ridingover the adjacent inclined side of the recess and will be moved aboutthe threads of said bolt.

5. In a nut and bolt lock, a threaded bolt having its outer terminalthreads intersected by a longitudinally extending recess opening fromthe outer end of the bolt, and a lock-nut having an axial cylindricalextension divided into a plurality of regularly spaced longitudinallytapered wedge shaped locking fingers adapted to be wedged into andseated within the longitudinally extending recess, the inclination ofthe Sides of said wedge shaped locking fingers relative to the walls ofsuch recess being such as to normally lock the nut in position andpermit the same to be moved through the application of force by a wrenchwhereby the engaged locking finger will be unseated by the coaction ofthe inclined sides of the finger with the adjacent portion of the recesscausing the finger to ride upon and be moved about the threads of saidbolt.

6. In a bolt and lock-nut, a bolt having a threaded portion intersectedby a lock receiving recess extending longitudinally from the outer endof said bolt and through the outer terminal threads thereof only, saidrecess having a circumferentially inclined portion and a lock-nutincluding equally spaced similarly shaped locking elements havingbeveled side portions adapted to be seated in said recess and to coactwith said circumferentially inclined portion whereby said lockingelements may be selectively driven into and seated in said longitudinalrecess to lock said bolt and nut against relative movement therebetweenand whereby said seated locking element may be unseated and moved intonut unlocking position through the coaction of the beveled side portionof said locking element with the circumferentially inclined portion ofsaid recess upon'the application of positive nut rotating force uponsaid nut.

In testimony whereof I have afiixed my signature,

FREDERICK WARNE.

